pavillion dv6000 HDD problem

hello, I'm in trouble with my laptop. It doesn't seem to recognise the hard disk any more.

My brother tried to format the hard drive and had some trouble, so the condition right now is the following:

when the pc trys too boot i get an error "err2err3" with a black screen.

When i try recovery to factory defaults, i'm getting an error 1002 and recovery stops.

If i run the diagnostic for disks in bios i get "#1- 07 fail".

Yesterday i put a pclinuxos live cd. I couldn't mount sda1 partition, while the sda2 (recovery) was mounted and gparted could not work correctly. Today with an ubuntu live i couldn't even see the recovery partition.